Cartridge-extractor for firearms



F. W. HULSE.

' CARTRIDGE EXTRACTOR FOR FIREARMS.

APPLICATION FILED MAR. 26.1918.

Patented Sapt. M, 1920.

'INVENMM? I FWf/wlsa AWURN the breech block 2 arren rnnnnnrcx WILLIAMEULSE, or NOBTHZEIELD, nuns. BIRMINGHAM, ENGLAND,

ASSIGNOR or ONE-HALF 53o ARMES AUTOMATIQUIES LEWIS, or niv'rwnnr, BEL-GIUM.

Specification of Letters Patent.

Patented Sept. ML, 1926:.

Application filed March 26, 1918. Serial No. 224,764.

To all whom it may concern Be it known that I, Funnnnrcx WILLIAM Home, asubject of the King of Great Britain and Ireland, residing at Norwood,Bristol Road, Northfield, near Birmingham, in the county of Warwick,England, have invented certain new and useful Improvements in orRelating to Cartridge-Extractors for Firearms, of which the following isa specification.

This invention relates to extractors fitted to the breech blocks ofrifles, automatic machine guns or other fire-arms.

The object of the invention is to enable the extractor to be more easilyfitted to the breech block and to increase its durability or life undersevere and quickly repeated stresses to which the extractor in manymodern fire-arms is subjected.

The extractor is of the type shown in the U S. patent to Mauser, No.31,670, July 8, 1890.

The present invention consists in malting the extractor proper and itsspring in two separate pieces, adapted to be mounted on the breech blockin such manner that the one is constrained or retained in place by theother.

The invention further consists in arranging the two said separate piecesrelative to the breech block in such a manner that the required elasticradial movement of the hook-like end of the extractor proper may takeplace with a smaller distortion of its spring, and that a greatereffective length of spring blade may be provided.

T append drawings illustrating my inven tionz- Figure 1 being alongitudinal sectional view;

Fig. 2 a plan; and

Fig. 3 a transverse vertical sectional view. In carrying the inventioninto effect, the extractor proper 3 is made of a rigid piece of steel,having a hook-like end 1 and locating pin 2 adapted to engage a recess 2in A short part of the outer surface of the extractor, near the hool*-like end, lies normally flush with the outer cylindrical surface of thebreech block, as shown. The bottom l of the extractor is flat andnormally lies in contact with the flat bottom 4* of the slot in thebreech block. 911 its outer surface a shoulder 5 is formed behind thesaid short part 3 flush with the breech block, the thickness graduallydiminishing toward the rear end 6. The rear end 7 of the spring blade 10is relatively thick and is shaped, as before, to enga e with theundercut slot in the breech blo s. The forward free end 8 of the springabuts against the said shoulder 5 of the extractor and presses thelatter radially inward. The outer surface of the spring blade is, asbefore, normally flush with that of the breech block, its inner surfacefrom its free end being just clear of the extractor.

The spring is in the form of a cantaliver blade and is inserted inposition by sliding it along the slot in the breech block, the flange 9being held by the undercut portion of the slot in the breech block asaforesaid. The extractor is next inserted with its rear end 6 underneaththe free end 8 of the spring blade, pushed along the slot in the breechblock, its hook-like end 1 being forcibly pushed radially outward untilthe end of the locating pin 2 rests on the bottom of the said slot.VVhen pushed home the locating pin 2 drops into the correspondin hole-QP in the breech block, retaining both the extractor and the springblade in the slot of the breech block.

When the hook-like end of the extractor is moved radially outward as itslides over the flanged base of the cartridge, the extractor oscillatesradially outward through a small angle about its rear end 6 as a fulcrumresting on the bottom of the breech block. The corresponding radialdisplacement of the free end 8 of the spring blade is less than that ofthe hook-like end of the extractor.

Thus the total angle of elastic distortion of the spring is decreased bythe present in vention, and as a greater volume of steel can beeffectively employed to take up the said elastic distortion the maximumstress on the spring under the severe conditions of service is reducedand the risk of fracture is therefore reduced to a minimum.

Having now fully described and asce tained my said invention and themanner in which it is to be performed, I declare that what I claim isi 1. In a fire-arm, the combination with a breech block having aperipheral slot into which merges a recess and undercut portions whichare formed in the breech block, of an extractor having a locating pinenga ing said recess and provided at its forward end with a hook-shapedpart adapted to engage the flange of a cartridge, the rear end of saidextractor resting upon the bottom of said slot, and aleaf-spring memberhavingv a pro ecting part to engage the under cutportions of the breechblock, one end of said spring member engaging an intermediate portion ofsaid extractor.

2. In a fire-arm, the combination With a breech block, of a cartridgeextractor carried by the breech block and having a hookshaped front end,the outer surface of the extractor being provided with a shoulder fromwhich the outer surface is inclined down to the rear end of theextractor, and a leaf-spring member having its rear end secured to thebreech block, the under surface of the spring member being inclined fromits front end down to the rear portion of the member, and the rear endof the extractor resting on the breech block and FREDERICK IVILLIAMHULSE.

